Doctor profile · Federal record
Dr. Lilly Chang, OD
Optometrist (CMS: Optometry) · Sonoma, CA
- NPI 1619521259
- Accepts Medicare
- MIPS 75.0 / 100 · 2023
- 7 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
201 W Napa St Ste 3
Sonoma, CA 954766621
(707) 938-3937
Credentials & registration
- NPI registered
- July 2019 — 7 yrs on file
- Profile last updated
- October 27, 2020
- Year of graduation
- 2019 — 7 yrs since
- Specialty taxonomy
- 152W00000X — NUCC code
- State license (1)
- California #34315TLG
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1619521259. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
2,085
Distinct HCPCS
5
Medicare allowed
$316,771
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
92014 |
Established patient complete exam of visual system | 887 | 883 | $153 | |
92004 |
New patient complete exam of visual system | 720 | 720 | $180 | |
92012 |
Established patient problem focused exam of visual system | 347 | 332 | $111 | |
92002 |
New patient problem focused exam of visual system | 118 | 118 | $106 | |
92250 |
Photography of the retina | 13 | 13 | $42 |
In context: peer comparison
Among 2 peers in Sonoma Optometrist, average services per provider: 236. This provider delivers 8.8× the peer median.Frequently asked questions
What is Dr. Lilly Chang's medical specialty?
Dr. Lilly Chang practices Optometrist in Sonoma, CA.
Where does Dr. Lilly Chang practice?
Dr. Lilly Chang practices at 201 W Napa St Ste 3, Sonoma, CA 954766621. Office phone: 7079383937.
What is Dr. Lilly Chang's NPI?
Dr. Lilly Chang's National Provider Identifier (NPI) is 1619521259, issued by NPPES.
Does Dr. Lilly Chang accept Medicare assignment?
Yes. Dr. Lilly Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Lilly Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient complete exam of visual system (HCPCS 92014); New patient complete exam of visual system (HCPCS 92004); Established patient problem focused exam of visual system (HCPCS 92012). Source: CMS Medicare Physician & Other Practitioners file.